Revelation 8:11
The star is called Absinthus, that is, Wormwood. So one-third of the waters turned to wormwood, and great numbers of people died of the waters, because they had turned bitter.
Hebrews 12:15
Continue to look after one another, that no one fails to gain God's spiritual blessing; or some evil like a bitter root may spring up and trouble you, and many of you be contaminated by it --
Revelation 8:7
The first one blew his trumpet, and there was a shower of hail and fire mixed with blood as it hurled itself upon the earth, and one-third of the earth was burned up, and all the green grass was burned up.
Treasury of Scripture Knowledge
Summary
And the name of the star is called Wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.
Wormwood
Bible References
Wormwood
Hebrews 12:15
Continue to look after one another, that no one fails to gain God's spiritual blessing; or some evil like a bitter root may spring up and trouble you, and many of you be contaminated by it --